Linker issue on Windows 11

[RustUser]

Hello all!

Whilst performing maturin develop, the build fails and states I cannot open input file "'python3.9.lib". Any suggestions to fix? I am currently using Python 3.9.7.

[messense]

Please provide more detailed information on how to reproduce your issue.

• pyo3 version
• maturin version
• how did you install your Python interpreter
• the full output of maturin develop -vv in text form, no images please

[RustUser]

Thank you for the quick response!

pyo3 version: 0.18.1
maturin version: 0.14.15
Python installation was performed by binary available on Python.org.

C:\Users\Anthony\string_sum>`` maturin develop -vv
🔗 Found pyo3 bindings
🐍 Found CPython 3.9 at C:\Users\Anthony\string_sum\.env\bin\python.exe
📡 Using build options features from pyproject.toml
       Fresh autocfg v1.1.0
       Fresh once_cell v1.17.1
       Fresh unicode-ident v1.0.8
       Fresh scopeguard v1.1.0
       Fresh smallvec v1.10.0
       Fresh cfg-if v1.0.0
       Fresh unindent v0.1.11
       Fresh indoc v1.0.9
       Fresh target-lexicon v0.12.6
       Fresh proc-macro2 v1.0.51
       Fresh windows_x86_64_msvc v0.42.1
       Fresh libc v0.2.140
       Fresh windows-targets v0.42.1
       Fresh quote v1.0.23
       Fresh lock_api v0.4.9
       Fresh memoffset v0.8.0
       Fresh pyo3-build-config v0.18.1
       Fresh syn v1.0.109
       Fresh windows-sys v0.45.0
       Fresh parking_lot_core v0.9.7
       Fresh pyo3-macros-backend v0.18.1
       Fresh pyo3-macros v0.18.1
       Fresh parking_lot v0.12.1
       Fresh pyo3-ffi v0.18.1
       Fresh pyo3 v0.18.1
   Compiling string_sum v0.1.0 (C:\Users\Anthony\string_sum)
     Running `set CARGO=\\?\C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\bin\cargo.exe&& set CARGO_CRATE_NAME=string_sum&& set CARGO_MANIFEST_DIR=C:\Users\Anthony\string_sum&& set CARGO_PKG_AUTHORS=""&& set CARGO_PKG_DESCRIPTION=""&& set CARGO_PKG_HOMEPAGE=""&& set CARGO_PKG_LICENSE=""&& set CARGO_PKG_LICENSE_FILE=""&& set CARGO_PKG_NAME=string_sum&& set CARGO_PKG_REPOSITORY=""&& set CARGO_PKG_RUST_VERSION=""&& set CARGO_PKG_VERSION=0.1.0&& set CARGO_PKG_VERSION_MAJOR=0&& set CARGO_PKG_VERSION_MINOR=1&& set CARGO_PKG_VERSION_PATCH=0&& set CARGO_PKG_VERSION_PRE=""&& set CARGO_PRIMARY_PACKAGE=1&& set PATH="C:\Users\Anthony\string_sum\target\debug\deps;C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\bin;C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\bin;C:\Users\Anthony\string_sum\.env\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;A:\Oculus\Support\oculus-runtime;C:\Program Files (x86)\Razer Chroma SDK\bin;C:\Program Files\Razer Chroma SDK\bin;C:\Program Files (x86)\VMware\VMware Player\bin\;C:\Program Files (x86)\Razer\ChromaBroadcast\bin;C:\Program Files\Razer\ChromaBroadcast\bin;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files\Java\jdk1.8.0_221\bin;C:\Program Files\Java\jdk-12.0.2;C:\Users\Anthony\vcpkg\installed\x64-windows\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\Git\cmd;C:\Program Files (x86)\PuTTY\;C:\Users\Anthony\AppData\Local\Android\Sdk\platform-tools;C:\depot_tools;C:\Users\Anthony\AppData\Local\Programs\Python\Python37-32;C:\msys32\mingw64\bin;C:\Users\Anthony\Tizen_Studio\studio\tools;C:\Program Files (x86)\Sciter\bin;C:\Program Files (x86)\Sciter\;C:\Program Files (x86)\Sciter\bin\64;C:\Users\Anthony\AppData\Local\Android\Ndk;C:\Users\Anthony\AppData\Local\Android\gradle-6.0\bin;C:\Program Files (x86)\GtkSharp\2.12\bin;C:\TDM-GCC-64\bin;C:\lua\bin;C:\MinGW\bin;C:\cygwin64\bin;C:\Ruby27-x64\lib;C:\Ruby27-x64\bin;C:\Ruby27-x64\bin\ruby_builtin_dlls;C:\Program Files (x86)\Mitov\Visuino;C:\Program Files\OpenSSL-Win64\bin;C:\Go\bin;C:\mingw64\bin;C:\msys64;C:\msys64\mingw64\bin;C:\Users\Anthony\AppData\Local\Android\Sdk;C:\Program Files\dotnet\;C:\pkg-config-lite-0.28-1;C:\pkg-config-lite-0.28-1\bin;C:\mingw64;C:\Users\Anthony\AppData\Roaming\nvm;C:\Program Files\nodejs;C:\sqlite;C:\msys64\var\lib\pacman\local;C:\msys64\home\Anthony;%GD%\bin;C:\msys64\mingw64\lib;C:\msys64\mingw64\lib\gcc\x86_64-w64-mingw32\10.3.0;C:\lua;C:\deps;C:\nasm-2.15.05;C:\Program Files\qemu;C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib;C:\WINDOWS\System;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\msys64\mingw64\include;C:\Program Files\Airshipper\;C:\Ruby30-x64\bin;C:\Ruby27-x64\bin;C:\Users\Anthony\Tizen_Studio\studio\tools\ide\bin;C:\Users\Anthony\.cargo\bin;C:\Users\Anthony\AppData\Local\Microsoft\WindowsApps;C:\Program Files\JetBrains\IntelliJ IDEA 2018.3.4\bin;C:\Users\Anthony\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\Anthony\AppData\Local\atom\bin;C:\Users\Anthony\go\bin;C:\Users\Anthony\AppData\Local\GitHubDesktop\bin;C:\Users\Anthony\AppData\Roaming\npm;C:\Users\Anthony\AppData\Local\Programs\Python\Python39;C:\Users\Anthony\AppData\Roaming\nvm;C:\Program Files\nodejs;;C:\Program Files\JetBrains\CLion 2021.3\bin;C:\Users\Anthony\.dotnet\tools;C:\Users\Anthony\AppData\Local\JetBrains\Toolbox\scripts;%USERPROFILE%\AppData\Local\Microsoft\WindowsApps"&& rustc --crate-name string_sum --edition=2021 src\lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type cdylib --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=d6c54d3dc2e1c1f4 --out-dir C:\Users\Anthony\string_sum\target\debug\deps -C incremental=C:\Users\Anthony\string_sum\target\debug\incremental -L dependency=C:\Users\Anthony\string_sum\target\debug\deps --extern pyo3=C:\Users\Anthony\string_sum\target\debug\deps\libpyo3-a3bedc010678a258.rlib -L native=C:\Users\Anthony\.cargo\registry\src\github.com-1ecc6299db9ec823\windows_x86_64_msvc-0.42.1\lib -L native=C:\msys64\mingw64\libs`
error: linking with `link.exe` failed: exit code: 1181
  |
  = note: "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.29.30133\\bin\\HostX64\\x64\\link.exe" "/DEF:C:\\Users\\Anthony\\AppData\\Local\\Temp\\rustc5TzVD4\\lib.def" "/NOLOGO" "C:\\Users\\Anthony\\AppData\\Local\\Temp\\rustc5TzVD4\\symbols.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.158emcf2tbmat4b0.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.1chvbo3mj3v662oa.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.1gzgslrzpsxmuck7.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.1hd7bnf9ngbnt5lr.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.1j5grfx4ky8yyis3.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.1mofkkd95pjcnwmi.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.1t40v6cbkpaesqb.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.1vdok40akh5g02xr.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.26ibbftfe5497u1o.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2c4mlbbh7cozynro.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2e57gu44owlj2bfa.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2hsd81qpniubpteu.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2ito896eupspvpcy.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2kiupqtpn4o2gzuj.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2pma62fb2qorg5pn.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2t438pc5eqvuc8r9.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2t5oxfu8etqp30gg.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.2z9lk0ziqn6g6d5r.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.306njx5wdyi8jbo6.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.30kxw4b2y0xif1ot.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3fvhmm771anqh950.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3gmblcacc97schc7.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3jp6fcl8je6be9tw.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3npurs2g36lfzv8z.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3rbhvhymzvmj8f9y.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3u820fqvdd8hc2lk.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3x6xjudjgkirudgo.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.422bwbb5jpc4a067.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.42vdo8o8jv3iio71.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.46qocmopo85q4wh.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.483gi8y6x65nulum.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.4wozjsx31mx6r8dm.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.5140rn0pfmkkxl87.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.57l1fc09g650geng.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.58cg67e9xihcgo9z.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.5cf5eyqfui43zy1v.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.5cuelvl6mporlytd.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.coz8bioixibw72j.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.jmvl6euszzbv7je.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.rwgvbyjsq8hcutk.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.s1svvk2owj6u4xy.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.tlha cyarveo3z7y.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.toovun705jkh5s2.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.xliwsqjn0ifpf98.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.xsnn1t6ilotlo4z.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.y43s4p51p85v26s.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.zlutgl84d76bmdw.rcgu.o" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.3fhjos7b8dkyor5x.rcgu.o" "/LIBPATH:C:\\Users\\Anthony\\string_sum\\target\\debug\\deps" "/LIBPATH:C:\\Users\\Anthony\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\windows_x86_64_msvc-0.42.1\\lib" "/LIBPATH:C:\\msys64\\mingw64\\libs" "/LIBPATH:C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libpyo3-a3bedc010678a258.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libmemoffset-8ee7052b7a3477a2.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libparking_lot-7ab36ccdb51296f5.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libparking_lot_core-47cd0f240c5489b3.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libwindows_sys-e8f6f9e6b911c373.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libcfg_if-7162a11b5533ad65.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libsmallvec-79a207bae60d2175.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\liblock_api-ff3737edf20afec0.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libscopeguard-1d5d25e870252659.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libpyo3_ffi-a875832d98d540af.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\liblibc-886a640dde76e97f.rlib" "C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\libunindent-a40c9b22e5f6c9a9.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libstd-c9a71bd02014cc03.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libpanic_unwind-1a26515fee0365cc.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\librustc_demangle-5dc491e9ed71b272.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libstd_detect-384a600215f7f42a.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libhashbrown-b41c35198f3cb8a7.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libminiz_oxide-d6551e7d16e9dc96.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libadler-694af0b75d9d45a9.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\librustc_std_workspace_alloc-3136aadbfbea1b6b.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libunwind-0bdccb1284465051.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libcfg_if-8de893de278a987b.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\liblibc-57c8b4d6b94d494c.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\liballoc-34f50d07c9021fd9.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\librustc_std_workspace_core-4c2803a533866d1c.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libcore-f6de9afd4 2767842.rlib" "C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libcompiler_builtins-edd2f3908bbf36f0.rlib" "windows.lib" "python3.9.lib" "legacy_stdio_definitions.lib" "kernel32.lib" "advapi32.lib" "userenv.lib" "kernel32.lib" "ws2_32.lib" "bcrypt.lib" "msvcrt.lib" "legacy_stdio_definitions.lib" "/NXCOMPAT" "/LIBPATH:C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib" "/OUT:C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.dll" "/OPT:REF,NOICF" "/DLL" "/IMPLIB:C:\\Users\\Anthony\\string_sum\\target\\debug\\deps\\string_sum.dll.lib" "/DEBUG" "/NATVIS:C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\intrinsic.natvis" "/NATVIS:C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\liballoc.natvis" "/NATVIS:C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\libcore.natvis" "/NATVIS:C:\\Users\\Anthony\\.rustup\\toolchains\\stable-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\libstd.natvis"
  = note: LINK : fatal error LNK1181: cannot open input file 'python3.9.lib'



error: aborting due to previous error


error: could not compile `string_sum` due to 2 previous errors

Caused by:
  process didn't exit successfully: `set CARGO=\\?\C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\bin\cargo.exe&& set CARGO_CRATE_NAME=string_sum&& set CARGO_MANIFEST_DIR=C:\Users\Anthony\string_sum&& set CARGO_PKG_AUTHORS=""&& set CARGO_PKG_DESCRIPTION=""&& set CARGO_PKG_HOMEPAGE=""&& set CARGO_PKG_LICENSE=""&& set CARGO_PKG_LICENSE_FILE=""&& set CARGO_PKG_NAME=string_sum&& set CARGO_PKG_REPOSITORY=""&& set CARGO_PKG_RUST_VERSION=""&& set CARGO_PKG_VERSION=0.1.0&& set CARGO_PKG_VERSION_MAJOR=0&& set CARGO_PKG_VERSION_MINOR=1&& set CARGO_PKG_VERSION_PATCH=0&& set CARGO_PKG_VERSION_PRE=""&& set CARGO_PRIMARY_PACKAGE=1&& set PATH="C:\Users\Anthony\string_sum\target\debug\deps;C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\bin;C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\bin;C:\Users\Anthony\string_sum\.env\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;A:\Oculus\Support\oculus-runtime;C:\Program Files (x86)\Razer Chroma SDK\bin;C:\Program Files\Razer Chroma SDK\bin;C:\Program Files (x86)\VMware\VMware Player\bin\;C:\Program Files (x86)\Razer\ChromaBroadcast\bin;C:\Program Files\Razer\ChromaBroadcast\bin;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files\Java\jdk1.8.0_221\bin;C:\Program Files\Java\jdk-12.0.2;C:\Users\Anthony\vcpkg\installed\x64-windows\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\Git\cmd;C:\Program Files (x86)\PuTTY\;C:\Users\Anthony\AppData\Local\Android\Sdk\platform-tools;C:\depot_tools;C:\Users\Anthony\AppData\Local\Programs\Python\Python37-32;C:\msys32\mingw64\bin;C:\Users\Anthony\Tizen_Studio\studio\tools;C:\Program Files (x86)\Sciter\bin;C:\Program Files (x86)\Sciter\;C:\Program Files (x86)\Sciter\bin\64;C:\Users\Anthony\AppData\Local\Android\Ndk;C:\Users\Anthony\AppData\Local\Android\gradle-6.0\bin;C:\Program Files (x86)\GtkSharp\2.12\bin;C:\TDM-GCC-64\bin;C:\lua\bin;C:\MinGW\bin;C:\cygwin64\bin;C:\Ruby27-x64\lib;C:\Ruby27-x64\bin;C:\Ruby27-x64\bin\ruby_builtin_dlls;C:\Program Files (x86)\Mitov\Visuino;C:\Program Files\OpenSSL-Win64\bin;C:\Go\bin;C:\mingw64\bin;C:\msys64;C:\msys64\mingw64\bin;C:\Users\Anthony\AppData\Local\Android\Sdk;C:\Program Files\dotnet\;C:\pkg-config-lite-0.28-1;C:\pkg-config-lite-0.28-1\bin;C:\mingw64;C:\Users\Anthony\AppData\Roaming\nvm;C:\Program Files\nodejs;C:\sqlite;C:\msys64\var\lib\pacman\local;C:\msys64\home\Anthony;%GD%\bin;C:\msys64\mingw64\lib;C:\msys64\mingw64\lib\gcc\x86_64-w64-mingw32\10.3.0;C:\lua;C:\deps;C:\nasm-2.15.05;C:\Program Files\qemu;C:\Users\Anthony\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib;C:\WINDOWS\System;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\msys64\mingw64\include;C:\Program Files\Airshipper\;C:\Ruby30-x64\bin;C:\Ruby27-x64\bin;C:\Users\Anthony\Tizen_Studio\studio\tools\ide\bin;C:\Users\Anthony\.cargo\bin;C:\Users\Anthony\AppData\Local\Microsoft\WindowsApps;C:\Program Files\JetBrains\IntelliJ IDEA 2018.3.4\bin;C:\Users\Anthony\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\Anthony\AppData\Local\atom\bin;C:\Users\Anthony\go\bin;C:\Users\Anthony\AppData\Local\GitHubDesktop\bin;C:\Users\Anthony\AppData\Roaming\npm;C:\Users\Anthony\AppData\Local\Programs\Python\Python39;C:\Users\Anthony\AppData\Roaming\nvm;C:\Program Files\nodejs;;C:\Program Files\JetBrains\CLion 2021.3\bin;C:\Users\Anthony\.dotnet\tools;C:\Users\Anthony\AppData\Local\JetBrains\Toolbox\scripts;%USERPROFILE%\AppData\Local\Microsoft\WindowsApps"&& rustc --crate-name string_sum --edition=2021 src\lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type cdylib --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=d6c54d3dc2e1c1f4 --out-dir C:\Users\Anthony\string_sum\target\debug\deps -C incremental=C:\Users\Anthony\string_sum\target\debug\incremental -L dependency=C:\Users\Anthony\string_sum\target\debug\deps --extern pyo3=C:\Users\Anthony\string_sum\target\debug\deps\libpyo3-a3bedc010678a258.rlib -L native=C:\Users\Anthony\.cargo\registry\src\github.com-1ecc6299db9ec823\windows_x86_64_msvc-0.42.1\lib -L native=C:\msys64\mingw64\libs` (exit code: 1)
💥 maturin failed
  Caused by: Failed to build a native library through cargo
  Caused by: Cargo build finished with "exit code: 101": `"cargo" "rustc" "--features" "pyo3/extension-module" "--manifest-path" "C:\\Users\\Anthony\\string_sum\\Cargo.toml" "--message-format" "json" "-vv" "--lib"

[davidhewitt]

Can you try running with PYO3_PRINT_CONFIG=1 environment variable set? This will cause the compile to fail with some debug info, which might give us a clue.

[RustUser]

I had set the Environment Variable per your request.

 maturin develop
🔗 Found pyo3 bindings
🐍 Found CPython 3.9 at C:\Users\Anthony\string_sum\.env\bin\python.exe
📡 Using build options features from pyproject.toml
   Compiling pyo3-ffi v0.18.1
error: failed to run custom build command for `pyo3-ffi v0.18.1`

Caused by:
  process didn't exit successfully: `C:\Users\Anthony\string_sum\target\debug\build\pyo3-ffi-f024e7627608b4b6\build-script-build` (exit code: 101)
  --- stdout
  cargo:rerun-if-env-changed=PYO3_CROSS
  cargo:rerun-if-env-changed=PYO3_CROSS_LIB_DIR
  cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_VERSION
  cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_IMPLEMENTATION
  cargo:rerun-if-env-changed=PYO3_PRINT_CONFIG

  -- PYO3_PRINT_CONFIG=1 is set, printing configuration and halting compile --
  implementation=CPython
  version=3.9
  shared=true
  abi3=false
  lib_name=python3.9
  lib_dir=C:\msys64\mingw64\libs
  executable=C:\Users\Anthony\string_sum\.env\bin\python.exe
  pointer_width=64
  build_flags=
  suppress_build_script_link_lines=false

  note: unset the PYO3_PRINT_CONFIG environment variable and retry to compile with the above config
💥 maturin failed
  Caused by: Failed to build a native library through cargo
  Caused by: Cargo build finished with "exit code: 101": `"cargo" "rustc" "--features" "pyo3/extension-module" "--manifest-path" "C:\\Users\\Anthony\\string_sum\\Cargo.toml" "--message-format" "json" "--lib"`

[davidhewitt]

lib_dir=C:\msys64\mingw64\libs

This looks like your problem - you say you've installed Python via the official download, but you're picking up interpreter configuration from msys64. You should check your PATH and confirm that the right Python interpreter is being used.

[RustUser]

Ah didn't even notice it. I'll take a look later to confirm. 😁